New pump!

Hey guys- I built my own cylinder today. Had a lacklustre day at work so I decided to create one. I have a CNC and a laser cutter as well as access to a multitude of acrylic sheets of various thicknesses and tubes. I ended up creating a double wall tube setup much like a thermos, with the idea that the two walls would support one another under vacuum pressures- well actually, I am also a machinist and wanted to see if I could do it. It looks pretty cool. Will post pics (of pump only, mods.) soon.

Looking forward to them.

Alright- here are some pics! Any questions, fire away!

I envy your tool set! I don’t have much (any) experience with pumping (yet) but I can certainly appreciate the mindset of deciding what you want and going ahead and making it for yourself. Looks good. :)

Panamera, why am I not surprised. Your talent is so awesome, brother, you are amazing. Now then, I saw the opening which I believe is acrylic, is that a self sealing end or did you put a rubber or polyurethane seal? Talk to me about the double wall set up. Being an artist like yourself, although our art is different, we think art. I am also a mechanical engineer and as I look and read of your design, my eyebrow raises with interest, as you probably know. You PM’d me to check this out didn’t you? I am glad you did. Thanks your the thought Panamera.

The cylinder is double walled much like a thermos, which means there is open space between the walls, so my question is, How is the inner wall supported? You mention it is supported by vacuum. That is genius I get the concept. Is the length of the inner tube slightly shorter than the outer tube? Just wondering how the vacuumed is distributed out between the walls. Very interesting my friend.

Sure looks heavy duty and a nice flare at the end for comfort. I see you didn’t use a quick disconnect fitting. That must be because of the way your pump tubing is set up.

So what’s the point of the double walls ?

The opening looks comfortably.. What is there? Silicone?

Beautiful man! Looks really comfy, great job!

Though the cost is $29, the VelSeal gaskets make for a supper comfy fit. They are not guaranteed for use on non Velseal cylinders; however, I have used one my LAPump flanged base and on a Boston Pump flared base.

Buy this VelSeal Gasket at Pumptoys.Com

Right? If its designed to enhance structural strength….how much vacuum do you plan on using? Just normal single acrylic walls will sustain enough vacuum to burst your dick….can’t imagine the need for double walls! Looks pretty cool though, nice job.

guys, he gave the answer already..

cause he can :P

The best answer. :up:

Hey guys! Thanks for all of the comments etc.

TNTJockey, thanks for the kind words bro. You are correct about your assumptions about how the space between the tubes helps to distribute the vacuum pressure. There is a hole hidden in the end cap that allows air to pass in and out of this space. Realistically, there is no need for this because the tube will never be used at such pressures anyways. What I do notice though is that the volume of air contained in the tube is much greater than in just a tube of similar inside diameter, so the vacuum increments are a bit more gradual, and more “springy” feeling.

Guys, the base is acrylic. The hole is 1.75 inches and the outer diameter is 3 inches, so there is a .875 wide flange with rounded edges. It is VERY comfortable and provides a flawless seal. Really spreads the vacuum forces out, and never feels like it is “digging in”.

Just wanted to see how this design would look, feel and function. I had a Kaplan cylinder once and this is way better.

I was going to ask if there were any holes to distribute the vacuum circulation, and there is. I like the design myself.